The ex-HMAS Hobart was scuttled on November 5, 2002. The scuttling was viewed by numerous boats and people standing on the Rapid Bay foreshore. Previously berthed at Port Adelaide, the ship was towed to Yankalilla Bay on November 3, 2002.

The ship was sunk using a controlled flooding exercise. Once anchored at the site additional holes were cut in the exterior of the ship (close to the waterline) and small explosive cutting charges placed on the hull below the waterline. This enabled the ship to fill with water relatively quickly, with sinking taking only around four minutes.

Prior to scuttling, a number of preparatory works needed to be done to ensure a safe dive site and minimal effect on the environment. These included:

The removal of oil, hydrdocarbons and other contaminants within the ship that could be hazardous or toxic to marine life.

Removal of all sharp and protruding objects along the divers' access path that could pose a danger to the diver.

Removal of all doors and access hatches and widening of openings to allow safe access for divers.

Widening of corridors and the provision of large openings in the exterior of the ship to allow light to penetrate and ensure safe diver access.

Sealing entrances into restrictive compartments such as the boiler rooms and engine rooms to ensure diver safety.

Removal of all furniture items and equipment that were not securely fixed or which obstruct access to areas.